N11 | Herndon Home

This 104 year old house is remodeled with aims of extending the structures useful life and making it less resource dependent. The end result is a home coming very close, if not meeting the Seattle 2050 goals for Energy and Carbon scoring and using a quarter the normal amount of city water while main

The workshop is a 130sf wood structure with cedar siding built on an existing concrete slab foundation from a previous garage. It is fully insulated (R19). A center section of clear roof panel and high side windows provide natural lighting with a double pane casement window for ventilation. It is fully wired with an 80 amp 240 volt electrical service.

The main structure air exchange is now 0.31 per hour as determined by blower door test. The blower door test was done as part of an energy audit after most upgrades to confirm status of the remodel and direct final projects (solar PV upgrade and floor insulation). Average daily water use is 20 gal per person, 25% of the last published Seattle per person residential average. Utilities use is tracked with a spreadsheet. Records going back ten years give direct visual reference to changes in utility consumption as projects are completed. A whole house monitoring system displays current and historical electrical, solar hot water system, and weather data.

Northwest Green Home Tour

The Northwest Green Home Tour is a free annual educational event, coproduced by the Northwest EcoBuilding Guild and Built Green that showcases local, sustainable and green new homes, remodels, and energy retrofits in the greater Seattle area. The tour is free and self-guided. Save the date for Saturday, April 26, 2014 11 a.m. to 5 p.m.